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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 68 · 40 sums
TalentJR

The trick (Dwandwa Yoga): For abc: columns D(a) | D(ab) | D(abc) | D(bc) | D(c). D(a) = a², D(ab) = 2ab, D(abc) = 2ac + b², D(abcd) = 2ad + 2bc. Combine from the right with carries.

NameDateTime takenScore ___ / 40
  1. 1.1780² =
  2. 2.9181² =
  3. 3.508² =
  4. 4.365² =
  5. 5.646² =
  6. 6.932² =
  7. 7.496² =
  8. 8.720² =
  9. 9.590² =
  10. 10.202² =
  11. 11.8371² =
  12. 12.168² =
  13. 13.271² =
  14. 14.198² =
  15. 15.498² =
  16. 16.668² =
  17. 17.302² =
  18. 18.211² =
  19. 19.252² =
  20. 20.672² =
  21. 21.174² =
  22. 22.881² =
  23. 23.186² =
  24. 24.8860² =
  25. 25.184² =
  26. 26.539² =
  27. 27.756² =
  28. 28.375² =
  29. 29.5879² =
  30. 30.677² =
  31. 31.370² =
  32. 32.8639² =
  33. 33.589² =
  34. 34.178² =
  35. 35.781² =
  36. 36.168² =
  37. 37.238² =
  38. 38.255² =
  39. 39.860² =
  40. 40.198² =

Answer key

  1. 3168400
  2. 84290761
  3. 258064
  4. 133225
  5. 417316
  6. 868624
  7. 246016
  8. 518400
  9. 348100
  10. 40804
  11. 70073641
  12. 28224
  13. 73441
  14. 39204
  15. 248004
  16. 446224
  17. 91204
  18. 44521
  19. 63504
  20. 451584
  21. 30276
  22. 776161
  23. 34596
  24. 78499600
  25. 33856
  26. 290521
  27. 571536
  28. 140625
  29. 34562641
  30. 458329
  31. 136900
  32. 74632321
  33. 346921
  34. 31684
  35. 609961
  36. 28224
  37. 56644
  38. 65025
  39. 739600
  40. 39204

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